25019983 has 4 divisors (see below), whose sum is σ = 25068528. Its totient is φ = 24971440.

The previous prime is 25019977. The next prime is 25019987. The reversal of 25019983 is 38991052.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25019983 - 2²¹ = 22922831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25019987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23491 + ... + 24532.

It is an arithmetic number, because the mean of its divisors is an integer number (6267132).

Almost surely, 2^25019983 is an apocalyptic number.

25019983 is a deficient number, since it is larger than the sum of its proper divisors (48545).

25019983 is an equidigital number, since it uses as much as digits as its factorization.

25019983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48544.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 25019983 is about 5001.9979008392. The cubic root of 25019983 is about 292.4796606014.

The spelling of 25019983 in words is "twenty-five million, nineteen thousand, nine hundred eighty-three".